N2 - We consider a recently proposed gyroscopic device for conversion
of mechanical ocean wave energy to electrical energy. Two models of
the device derived from standard engineering mechanics from the literature
are analysed, and a model is derived from analytical mechanics
considerations. From these models, estimates of the power production,
eciency, forces and moments are made. We nd that it is possible to
extract a signicant amount of energy from an ocean wave using the
described device. Further studies are required for a full treatment of
the device.

AB - We consider a recently proposed gyroscopic device for conversion
of mechanical ocean wave energy to electrical energy. Two models of
the device derived from standard engineering mechanics from the literature
are analysed, and a model is derived from analytical mechanics
considerations. From these models, estimates of the power production,
eciency, forces and moments are made. We nd that it is possible to
extract a signicant amount of energy from an ocean wave using the
described device. Further studies are required for a full treatment of
the device.

BT - Efficiency of a gyroscopic device for conversion of mechanical wave energy to electrical energy